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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script type="text/javascript">

        function Show() {
            document.getElementById("spaShow").innerHTML += "A";
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    </script>
</head>
<body>
    onmousemove="Show()" onmousedown="Show();" onmouseover="Show();"
    <div style="width: 300px; height: 300px; background-color: Yellow;">
    </div>
    <span id="spaShow"></span>onkeypress="Show();"
    <input type="button" value="aaaaa" />
     onkeyup="Show()"
    <textarea rows="5" onchange="Show();"></textarea>
</body>
</html>
